<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../reactBag/react.development.js"></script>
    <script src="../reactBag/react-dom.development.js"></script>
    <script src="../reactBag/babel.min.js"></script>
    <script src="../reactBag/prop-types.js"></script>
</head>
<body>
    <div id="app"></div>

    <script type="text/babel">

        class App extends React.Component{
            state = {
                hobby : '吃饭'
            }
            render() {
                const {hobby} = this.state;
                return (
                    <div>
                                                
                        <button onClick = {this.changeHobby}></button>

                        <h1>父亲喜欢{hobby}</h1>
                        <Son hobby = {hobby}/>
                    </div>
                )
            }
            changeHobby = () => {
                const {hobby} = this.state
                this.setState({hobby : '睡觉'})
            }
        }

        class Son extends React.Component{

            render() {
                const {hobby} = this.props;
                return <p>儿子也喜欢{hobby}</p>
            }
        }


        ReactDOM.createRoot(document.getElementById('app')).render(<App/>)
    </script>
</body>
</html>